ZTE R8872AS1900 Macro Radio Remote Unit User Manual ZXSDR R8872A Product Description

ZTE Corporation Macro Radio Remote Unit ZXSDR R8872A Product Description

Users Manual

ZXSDR R8872A Product Description UniRAN 16/GUL Multi-Mode
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 1 ZXSDR R8872A Product Description Version Date Author Reviewer Notes V1.00 2017/01/26 Yang Lisha 1. Update static receiver sensitivity 2. Update Reliability 3. Update power consumption 4. Update 256QAM in downlink V1.10 2017/03/16 Yu Yang 1. Update capacity 2. Update bandwidth © 2017 ZTE Corporation. All rights reserved. ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used without the prior written permission of ZTE. Due to update and improvement of ZTE products and technologies, information in this document is subjected to change without notice.
ZXSDR R8872A Product Description 2 ZTE Confidential & Proprietary TABLE OF CONTENTS 1 Overview ............................................................................................................ 4 1.1 Introduction .......................................................................................................... 4 1.2 Benefits ................................................................................................................ 4 1.3 Application Scenarios .......................................................................................... 5 2 Product Architectures ....................................................................................... 6 2.1 Physical Appearance ........................................................................................... 6 2.2 Hardware Architecture ......................................................................................... 6 2.2.1 QTR ..................................................................................................................... 7 2.2.2 DFL ...................................................................................................................... 8 2.2.3 PA 8 2.2.4 PWR .................................................................................................................... 9 2.2.5 PIB ....................................................................................................................... 9 2.3 Software Architecture ........................................................................................... 9 2.4 Functionality ....................................................................................................... 10 3 Technical Specifications ................................................................................. 11 3.1 Physical Indices ................................................................................................. 11 3.2 Performance Indices .......................................................................................... 12 3.2.1 Operation Frequency Band ................................................................................ 12 3.2.2 Capacity ............................................................................................................. 12 3.2.3 ToC Output Power ............................................................................................. 13 3.2.4 Bandwidth .......................................................................................................... 13 3.2.5 Receiver Sensitivity ............................................................................................ 14 3.3 Power Indices .................................................................................................... 14 3.3.1 Power Requirements ......................................................................................... 14 3.3.2 Power Consumption ........................................................................................... 14 3.4 Interface Indices ................................................................................................ 15 3.5 Transmission ..................................................................................................... 17 3.6 Working Environment Indices............................................................................. 18 3.7 Electromagnetic Compatibility Indices ................................................................ 18 3.8 Reliability Indices ............................................................................................... 18 4 Glossary ........................................................................................................... 20
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 3 FIGURES Figure 1-1 Application Scenarios ........................................................................................ 5 Figure 2-1 Physical Appearance ......................................................................................... 6 Figure 2-2 System Structure ............................................................................................... 7 Figure 2-3 R8872A Software Architecture ..........................................................................10 Figure 3-1 Physical Appearance ........................................................................................11 Figure 3-2 External Interfaces at the Bottom ......................................................................15 Figure 3-3 External Interfaces on the Right Side ................................................................16 Figure 3-4 LED Indicators on the Panel .............................................................................17 TABLES Table 3-1 Physical Indices .................................................................................................12 Table 3-2 Operation Frequency Band ................................................................................12 Table 3-3 Capacity .............................................................................................................13 Table 3-4 ToC Output Power .............................................................................................13 Table 3-5 Static Receiver Sensitivity ..................................................................................14 Table 3-6 Power Supply .....................................................................................................14 Table 3-7 Power Consumption ...........................................................................................15 Table 3-8 Description of the External Interfaces at the Bottom ...........................................16 Table 3-9 Description of the External Interfaces on the Right Side .....................................17 Table 3-10 CPRI Interfaces ................................................................................................18 Table 3-11 Environment Indices.........................................................................................18 Table 3-12 Electromagnetic Compatibility Indices ..............................................................18 Table 3-13 Reliability Characteristics .................................................................................19
ZXSDR R8872A Product Description 4 ZTE Confidential & Proprietary 1 Overview 1.1 Introduction This document provides a high level description of ZTE ZXSDR R8872A (hereinafter referred to as R8872A), which is the latest compact RRU (Remote Radio Unit) used in ZTE wireless communication solution. Based on ZTE common innovative SDR platform, R8872A can work in GSM, UMTS, or LTE single mode or multi-mode at the same frequency band. The volume of R8872A is 20L, and its weight is 23Kg. The document is designed to give an overview of the characteristics of R8872A, its key benefits, the architecture, functionality and services. The document also describes the system capabilities. 1.2 Benefits  High performance R8872A has 2*80W of high TOC output power. With high output power, it supports large capacity which can be used in large site in dense urban with high traffic. R8872A is designed with wide bandwidth to meet with the growing demands for wide working bandwidth. E.g., R8872A supports 75MHz of IBW (instantaneous bandwidth) in band3 1800MHz frequency band. RRUs with full working bandwidth integrate more spectrum resources and help to decrease hardware investment exponentially.  SDR 2T4R design to ensure one clear and simple network R8872A supports GSM, UMTS, LTE or mixed technologies. Design of 2T4R channels ensures the smooth evolution of the system from GSM/UMTS to LTE 2*2 MIMO. Instead of running hardware on independent platforms for each technology, operators can implement various wireless technologies through software configuration on the same hardware platform. It fully satisfies operators’
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 5 requirements of hybrid network deployment and long term evolution with lowest cost.  Lower Total Cost of Ownership (TCO) ZXSDR R8872A’s PA adopts advanced efficiency enhancement technologies to realize high power efficiency, such as Doherty PA, DPD linear technology and MCPA technology. It also supports dynamic adaptive PA power supply due to the output power. Power consumption can be greatly decreased together with these features. 1.3 Application Scenarios R8872A as the Remote Radio Unit and Baseband Unit (BBU) comprise distributed macro base station BS8700. It can be used in dense urban area with high traffic. Typical application scenarios of R8872A are shown in the following figure: Figure 1-1 Application Scenarios
ZXSDR R8872A Product Description 6 ZTE Confidential & Proprietary 2 Product Architectures 2.1 Physical Appearance The physical appearances of R8872A are shown in the following figure. Figure 2-1 Physical Appearance 2.2 Hardware Architecture The hardware architecture of R8872A is shown in Figure 2-2.
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 7 Figure 2-2 System Structure R8872A includes 5 main hardware modules:  Quad-channel Transceiver (QTR)  Duplex Filters LNA (DFL)  2x Power Amplifier (PA)  Power module (PWR)  Protecting Interface Board (PIB) 2.2.1 QTR The QTR has following functions:  Process 4 received signals and 2 transmitted signals;  Convert uplink and downlink radio signal;  Multiplex downlink IQ signal and de-multiplex uplink signal; PIB QTR PWR DFL CPRI 1 CPRI 2 PWR ALM  PA Out DC in ANT1 ANT2 ANT3 ANT4 R8872A 2 x PA PA Out GND CPRI links AISG/MON
ZXSDR R8872A Product Description 8 ZTE Confidential & Proprietary  Amplify, filter and convert A/D and D/A signal;  Convert between optical and electric signal;  Capture reference clock signal from baseband unit and provide clock signal to other units;  Measure and report voltage standing wave ratio (VSWR);  Self-detect and report hardware failure alarm;  Detect and report over-heat alarm;  Provide communication interfaces, including,  Two CPRI interfaces  one DB15 port, for 2 dry contacts, one local debugging or AISG connection through different kind of cables  Reset function. 2.2.2 DFL The DFL has following functions:  Combine and isolate transmitted and received signals;  Filter the transmitted signal and received signal;  Provide DFL alarm monitor function. 2.2.3 PA The PA has following functions:  Perform radio signal amplifying function;  Implement temperature report function;  Implement Low-Noise-Amplifier (LNA) function;
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 9  Implement over-current, over-heat, over-power and over-standing wave protecting function. 2.2.4 PWR The PWR has following functions:  Provide power supply function;  Monitor input over-voltage/under-voltage, input power outage, output over-voltage/ under-voltage, output over-current alarm, and report it to QTR board. 2.2.5 PIB The PIB has the following function:  Integrate lightning protection unit for DB15 interface, and the protection level is 20 KA. 2.3 Software Architecture The software architecture of R8872A can be divided into two layers, SDR Unified Platform Software and Application Software. The architecture is shown in the following figure:
ZXSDR R8872A Product Description 10 ZTE Confidential & Proprietary Figure 2-3 R8872A Software Architecture The Operating and Maintenance (OAM) sub-system is the application layer. Its main functions are software downloading, configuration, management, system maintenance and measurement. The Operation Support Sub-system (OSS) is the supporting layer in this entire framework. It is a hardware independent layer that provides basic functions such as scheduling, timer, and memory management, communication, sequencing control, monitoring, alarming and logging. The Board Support Package (BSP) provides device driver & initialization and supports basic functions like alarming and monitoring. It also provides the related interfaces and services to the Operating System. 2.4 Functionality R8872A is the remote radio unit of distributed base station. The signal is transmitted/ received through R8872A to/from base band processing unit for further processing via standard CPRI interface. By applying the distributed system, the feeder loss will be eliminated when the radio unit is positioned close to the antenna. The coverage is enlarged with this solution. Hardware BSP OSS Linux OAM SDR Unified Platform Software Application Software Hardware System
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 11 The functions of R8872A include:  Support LTE bandwidth defined in 3GPP  Support 850/900/1800/1900 MHz frequency band  Support 2T4R in one box which can optimize spectrum efficiency greatly and improve network uplink performance  Support 256QAM modulation in LTE downlink and 64QAM in uplink  Support transmit power report function for every carrier  Support overload protection function for power amplifier  Support transmit channel switching on/off function. 3 Technical Specifications 3.1 Physical Indices R8872A is the multi-carrier RRU with two transmitters. The physical appearance is shown below. Figure 3-1 Physical Appearance
ZXSDR R8872A Product Description 12 ZTE Confidential & Proprietary Table 3-1 Physical Indices Item Indices Size (H*W*D) (mm) 415*352*137 mm (20L) Weight (kg) 23 kg Color Silver gray 3.2 Performance Indices 3.2.1 Operation Frequency Band Table 3-2 Operation Frequency Band RRU Type Band Operation Radio Frequency Band Mode R8872A S8500 B5, 850 MHz Tx: 869 – 894 MHz Rx: 824 – 849 MHz GUL multi-mode R8872A S9000 B8, 900 MHz Tx: 934 – 960 MHz Rx: 889 – 915 MHz GL dual-mode R8872A S1800 B3, 1800 MHz TX: 1805 – 1880 MHz RX: 1710 – 1785 MHz GL dual-mode R8872A S1900 B2, 1900 MHz Tx: 1930 – 1990 MHz Rx: 1850 – 1910 MHz GUL multi-mode 3.2.2 Capacity
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 13 Table 3-3 Capacity RRU Type System RRU Capacity R8872A S8500 R8872A S1900 GSM single mode 2*4 TRXs UMTS single mode 2*2 CSs LTE single mode L 2*20M 2T2R Cells L 1*20M 2T2R Cell + L 1*15M 2T2R Cell GUL multi-mode G 2*2TRXs + U 2*1CSs + L 1*10M 2T2R Cell R8872A S9000 GSM single mode 2*6 TRXs LTE single mode 2*10MHz 2T2R/2T4R Cells GL dual-mode G 2*4TRXs+L 1*10MHz 2T2R/2T4R Cell, or G 2*2TRXs+L 2*10MHz 2T2R/2T4R Cells R8872A S1800 GSM single mode 2*6 TRXs LTE single mode 2*20MHz 2T2R/2T4R Cells GL dual-mode G 2*4TRXs+L 1*20MHz 2T2R/2T4R Cell, or G 2*2TRXs+L 2*20MHz 2T2R/2T4R Cells 3.2.3 ToC Output Power Table 3-4 ToC Output Power RRU Type TOC Output Power[1] R8872A 2*80W Note: When “ZGO-04-01-011 Power Boost for 8PSK” is applied in GSM mode, the TOC output power achieves the same in 8PSK modulation as in GMSK. 3.2.4 Bandwidth R8872A supports all LTE bandwidth defined in 3GPP 15/20 MHz. 1 The TOC here means the max capability of the hardware. The specific TOC output power is limited by the license.
ZXSDR R8872A Product Description 14 ZTE Confidential & Proprietary 3.2.5 Receiver Sensitivity The receiver sensitivity of R8872A is shown as following table. Table 3-5 Static Receiver Sensitivity Mode Frequency Spectrum (MHz) Single Antenna (dBm) Dual Antennas (dBm) Four Antennas (dBm) GSM 850/900/1800/1900 -113.5 -116 - UMTS 850/1900 -126.4 -129.1 - LTE 900/1800 -106.4 -109.2 -112 850/1900 -106.4 -109.2 N/A 3.3 Power Indices 3.3.1 Power Requirements The following table describes the power supply and the fluctuation range. Table 3-6 Power Supply Item Index Power Supply DC: -48 V (-37 V – -60 V DC) R8872A supports integrated lightning protection module for DC power supply. Its protection level is 20 KA. 3.3.2 Power Consumption Power consumptions of R8872A at normal ambient temperature are shown in the table below:
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 15 Table 3-7 Power Consumption RRU Type Configuration Typical Power Consumption Peak Power Consumption R8872A S1800 GSM S8*20W 275W 555W GSM S2*2*20W+LTE 2*40W 335W 555W R8872A S9000 GSM S8*20W 295W 575W LTE S2, 2*40W/LTE cell 315W 575W GSM S2*2*20W+LTE 2*40W 355W 575W R8872A S8500 LTE 2*80W 315W 600W R8872A S1900 LTE 2*80W 290W 550W 3.4 Interface Indices The external interfaces of the R8872A are located at the bottom and on the front side of the chassis. Figure 3-2 shows the external interfaces at the bottom of the R8872A chassis. Figure 3-2 External Interfaces at the Bottom For a description of the external interfaces at the bottom of the R8872A chassis, refer to the following table. 1 23 4 5 6
ZXSDR R8872A Product Description 16 ZTE Confidential & Proprietary Table 3-8 Description of the External Interfaces at the Bottom No. Label Interface Interface Type/Connector 1 AISG/MON AISG equipment interface MON external monitoring interface LMT O&M Ethernet interface DB15 connector 2 GND Protective grounding interface 16 mm2 yellow-green round terminal 3 ANT1 (TX/RX) TX/RX antenna interface 50 Ω DIN-mode connector 4 ANT2 (RX) RX antenna interface 50 Ω DIN-mode connector 5 ANT3 (RX) RX antenna interface 50 Ω DIN-mode connector 6 ANT4 (TX/RX) TX/RX antenna interface 50 Ω DIN-mode connector Figure 3-3 shows the external interfaces on the right side of the R8872A chassis. Figure 3-3 External Interfaces on the Right Side For a description of the external interfaces on the right side of the R8872A chassis, refer to the following table. 1234
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 17 Table 3-9 Description of the External Interfaces on the Right Side No. Label Interface Interface Type/Connector 1 OPT1 Interface for communication between the RRU and a BBU, or RRU cascading interface LC-type optical interface (IEC 874) 2 OPT2 RRU cascading interface LC-type optical interface (IEC 874) 3 PWR Power input interface 2-pin customized connector 4 Grounding cable interface for AC power supply - Additionally, R8872A provides 6 LED indicators. The indicators on the R8872A panel indicate the operating status of the RRU. The indicators are located on the front side of the chassis, see Figure 3-4. Figure 3-4 LED Indicators on the Panel 3.5 Transmission R8872A is connected to BBU through CPRI interfaces. For more information about CPRI interfaces, refer to the following table.
ZXSDR R8872A Product Description 18 ZTE Confidential & Proprietary Table 3-10 CPRI Interfaces Item Value Interface Type Speed Standard CPRI interface 2 SFP (LC) 6.144 Gbps [2] CPRI V4.2 3.6 Working Environment Indices Table 3-11 Environment Indices Item Characteristics Temperature -40 to +55 °C Relative Humidity 5% to 100% Waterproof/Dustproof IP65 Ground ≤5 Ω; earth resistance can be less than 10 Ω in thunder-less area where thunderstorm days is less than 20 per year. 3.7 Electromagnetic Compatibility Indices Table 3-12 Electromagnetic Compatibility Indices Item Characteristics Static Discharge Immunity Contact Discharge: ±6000V Air Discharge: ±8000V Surge Impact Immunity DC Power port Line(Ground): ±2000V 3.8 Reliability Indices 2 The speed here refers to the max capability of the hardware. The specific speed depends on the optical module configuration.
ZXSDR R8872A Product Description ZTE Confidential & Proprietary 19 Table 3-13 Reliability Characteristics Item R8872A MTBF DC: ≥458,000 hours MTTR 1 hour Availability index DC: ≥99.999782% Down duration DC: ≤1.148 min/year
ZXSDR R8872A Product Description 20 ZTE Confidential & Proprietary 4 Glossary Abbreviations Full Name BBU Base Band processing Unit BSP Board Support Package CPRI Common Public Radio Interface DL Downlink DFL Duplexer & Filters DPD Digital Pre-Distortion GSM Global System for Mobile communications LMT Local Maintenance Terminal LNA Low-Noise-Amplifier LTE Long Term Evolution MCPA Multi-Carrier Power Amplifier MIMO Multi Input Multi Output MTBF Mean Time Between Failures MTTR Mean Time To Recovery OAM Operating And Maintenance OSS Operation Support Sub-system PA Power Amplifier PWR Power QTR Quad-channel Transceiver RF Radio Frequency RRU Remote Radio Unit SDR Software Defined Radio ToC Top of Cabinet UE User Equipment UL Uplink VSWR Voltage Standing Wave Ratio

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